Some of our examples use GNU/Linux extensions functions/variables:
1) domtop.c uses usleep(3),
2) logging.c uses getopt(3).
Put _GNU_SOURCE definition at the top of corresponding files so
that users can just grab the code and compile it (in contrast
with the rest of the code where _GNU_SOURCE is declared in
meson-config.h).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Division between integers will also be integer.
Thus, to preserve fractional part explicitly
convert first operand to double.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 28d54aab05 ("examples: Introduce domtop")
Signed-off-by: Egor Makrushin <emakrushin@astralinux.ru>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Inside of myDomainEventMemoryFailureCallback() arguments are
printed via printf but '%d' is used to print @flags (of type
uint). Use '0x%x' instead, just like we do everywhere else.
Signed-off-by: zhujun2 <zhujun2@cmss.chinamobile.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In a few places we still use the good old:
sizeof(var) / sizeof(var[0])
sizeof(var) / sizeof(int)
The G_N_ELEMENTS() macro is preferred though. In a few places we
don't link with glib, so provide the macro definition.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
The 'vmsa' struct was moved out of 'struct vcpu_svm' into the 'sev_es'
sub-struct in linux commit:
commit b67a4cc35c9f726999fa29880713ce72d4e39e8d
Author: Peter Gonda <pgonda@google.com>
Date: Thu Oct 21 10:42:59 2021 -0700
KVM: SEV: Refactor out sev_es_state struct
Move SEV-ES vCPU metadata into new sev_es_state struct from vcpu_svm.
Also update the line reference to have more margin.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The script references a very specific line in the kernel source code and
a very specific struct. Further changes to the kernel are likely going
to break it. Set the expectations by adding a warning to the reader.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Use same style in the 'struct option' as:
struct option opt[] = {
{ a, b },
{ a, b },
...
{ a, b },
};
Signed-off-by: Jiang Jiacheng <jiangjiacheng@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In general we expect to be able to construct a SEV-ES VMSA
blob from knowledge about the AMD achitectural CPU register
defaults, KVM setup and QEMU setup. If any of this unexpectedly
changes, figuring out what's wrong could be horrible. This
systemtap script demonstrates how to capture the real VMSA
that is used for a SEV-ES as it is booted. The captured data
can be fed into the 'sevctl vmsa show' command in order to
produce formatted info with named registers, allowing a
'diff' to be performed.
This script will need updating for any kernel version that is
not 6.0, to set the correct line numbers.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The testdriver has xmlns support for overriding object default
state. demo it by pausing a VM
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This new "post-copy failed" reason for the running state will be used on
the destination host when post-copy migration fails while the domain is
already running there.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
We no longer need to worry about GCC version older than 7.4.0. The other
remaining conditionals checks were also overkill for the example code.
In the unlikely event that someone tries to re-use the code in a
scenario where further conditions apply they can figure out.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The admin module is very closely tied to RPC. If we are
building without RPC support there's not much use for the
admin module, in fact it fails to build.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In some cases we have a label that contains nothing but a return
statement. The amount of such labels rises as we use automagic
cleanup. Anyway, such labels are pointless and can be dropped.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Currently, the dommigrate example returns 0 or 1 for success or
failure state, respectively. Except for a few cases where it
forgot to change the @ret variable just before jumping onto the
'cleanup' label. Making the code follow our usual pattern
(initialize @ret to an error value and set it to success value
only at the end) fixes those cases. Also, using EXIT_SUCCESS and
EXIT_FAILURE is more portable (even though on my system they are
just an alias to values the example already uses).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Kristína Hanicová <khanicov@redhat.com>
The usage() function should just print expected arguments. Make
the function return void then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Kristína Hanicová <khanicov@redhat.com>
As advertised in previous commit, this event is delivered to us
when virtio-mem module changes the allocation inside the guest.
It comes with one attribute - size - which holds the new size of
the virtio-mem (well, allocated size), in bytes.
Mind you, this is not necessarily the same number as 'requested
size'. It almost certainly will be when sizing the memory up, but
it might not be when sizing the memory down - the guest kernel
might be unable to free some blocks.
This current size is reported in the domain XML as an output
element only.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce testIOThreadInfo to store IOThread infos: iothread_id,
poll_max_ns, poll_grow and poll_shrink for future usage.
Add an example of IOThread configuration to testdomfc4.xml, we also want
to generate default testIOThreadInfo for the IOThread configured in the
xml, so introduce testDomainGenerateIOThreadInfos, the values are taken
from QEMU.
Signed-off-by: Luke Yue <lukedyue@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since a mediated device can be persistently defined by the mdevctl
backend, we need additional lifecycle events beyond CREATED/DELETED to
indicate that e.g. the device has been stopped but the device definition
still exists.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Stdio was buffering strings in functions:
myDomainEventBlockJobCallback,
myDomainEventBlockThresholdCallback,
myDomainEventMemoryFailureCallback. It caused flushing the
printed strings from callbacks at the end of a run, not
gradually. The solution is to add \n at the end of each string.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Introduce memory failure event. Libvirt should monitor domain's
event, then posts it to uplayer. According to the hardware memory
corrupted message, a cloud scheduler could migrate domain to another
health physical server.
Several changes in this patch:
public API:
include/*
src/conf/*
src/remote/*
src/remote_protocol-structs
client:
examples/c/misc/event-test.c
tools/virsh-domain.c
With this patch, each driver could implement its own method to run
this new event.
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Our schema forces a <target/> element which was not present in the
files.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Schema mandates a '<dir>' element, not '<directory>'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
There is no such <storage> element, <capacity> and <allocation> exist at
the top level.
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Various places reported by cppcheck's invalidPrintfArgType_sint
and invalidPrintfArgType_uint.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Update the events stap example because the event loop impl is replaced by
GLib based event loop impl after commit 55fe8110.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Han Han <hhan@redhat.com>
Meson doesn't use .libs directory, everything is placed directly into
directories where meson.build file is used.
In order to have working tests and running libvirt directly from GIT we
need to fix all the paths pointing '.libs' directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
EXTRA_DIST is not relevant because meson makes a git copy when creating
dist archive so everything tracked by git is part of dist tarball.
The remaining ones are not converted to meson files as they are
automatically tracked by meson.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Pvpanic device supports bit 1 as crashloaded event, it means that
guest actually panicked and run kexec to handle error by guest side.
Handle crashloaded as a lifecyle event in libvirt.
Test case:
Guest side:
before testing, we need make sure kdump is enabled,
1, build new pvpanic driver (with commit from upstream
e0b9a42735f2672ca2764cfbea6e55a81098d5ba
191941692a3d1b6a9614502b279be062926b70f5)
2, insmod new kmod
3, enable crash_kexec_post_notifiers,
# echo 1 > /sys/module/kernel/parameters/crash_kexec_post_notifiers
4, trigger kernel panic
# echo 1 > /proc/sys/kernel/sysrq
# echo c > /proc/sysrq-trigger
Host side:
1, build new qemu with pvpanic patches (with commit from upstream
600d7b47e8f5085919fd1d1157f25950ea8dbc11
7dc58deea79a343ac3adc5cadb97215086054c86)
2, build libvirt with this patch
3, handle lifecycle event and trigger guest side panic
# virsh event stretch --event lifecycle
event 'lifecycle' for domain stretch: Crashed Crashloaded
events received: 1
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
The build still succeeds with the workaround removed, so
whatever was causing the problem no longer exists.
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
G_STATIC_ASSERT() is a drop-in functional equivalent of
the GNULIB verify() macro.
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
A backup job may consist of many backup sub-blockjobs. Add the new
blockjob type and add all type converter strings.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We try to keep the example programs independent of libraries
other than libvirt.
Rename the locally defined ARRAY_CARDINALITY macro to G_N_ELEMENTS
which GLib provides, even though we don't actually include GLib.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Name the macro G_GNUC_UNUSED instead of ATTRIBUTE_UNUSED
to match the rest of libvirt code.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The nwfilter XML configs are not merely examples, they are data that is
actively shipped and used in production by users.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
All other examples are organized using the either the format/
or the format/category/ hierarchy already, and grouping all
C programs together removes the last remaining outliers.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Now that all C examples are neatly sorted into only three
categories, getting rid of our custom installation machinery
and replacing it with the standard autotools mechanism
finally becomes feasible.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Most C examples live in their own directory, which seems a
bit unnecessary especially considering that all virt-admin
related examples share a single admin/ directory. Reorganize
non-admin C examples in two categories: domain/ for those
that act on a domain, and misc/ for everything else.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
